Segment Reporting and Geographic Information (Tables)

12 Months Ended

Dec. 31, 2020

Segment Reporting and Geographic Information

Schedule of sales by end-market

	For the year ended December 31,
	2020		2019		2018
	(in thousands)
Sales by end-market
Semiconductor	$	165,909	$	175,608	$	137,797
Compound Semiconductor		107,922		85,877		260,323
Data Storage		123,288		84,075		69,141
Scientific & Other		57,044		73,789		74,821
Total	$	454,163	$	419,349	$	542,082

Schedule of sales by geographic region

	Net Sales to Unaffiliated Customers						Long-lived Tangible Assets
	2020		2019		2018		2020		2019		2018
	(in thousands)
United States	$	145,353	$	126,160	$	125,659	$	64,967	$	75,187	$	78,503
EMEA(1)		73,124		57,351		89,102		120		143		205
China		57,589		71,078		194,032		84		130		81
Rest of APAC		177,569		164,363		131,519		100		251		1,495
Rest of World		528		397		1,770		—		—		—
Total	$	454,163	$	419,349	$	542,082	$	65,271	$	75,711	$	80,284

(1) EMEA consists of Europe, the Middle East, and Africa